Thanks for that. But I was wondering who was more up to date. I wasn't sure the Italians are 

I made a spreadsheet in open office, 1 sheet is the standard nic calculator and the second sheet is for mixing ready made juices to get another nic level. It can be downloaded from here: http://fupdup.com/e-juicecalculator.xls
I saved it as an xls file because openoffice works with it as does the popular M$ product, but MS seems to have a problem with ods files.
(Please bear with me because I'm a newbie)
So, I've DLed your recipe calculator and found it a bit confusing, but I think I can work through it. I want to thank you for taking the time to create one that's easy enough to understand for a newbie like me
Here's my question: I'm looking to DIY a nice menthol flavored e juice. I'm probably going to buy some unflavored nic juice (60 ml of 100 mg) from MyFreedomSmokes, as well as some non-nic VG (I prefer VG over PG). I'll be able to figure out the correct ml of each that I'll need to create my end product of ~24mg e juice. My question is, though--- every menthol 'flavor' I run across seems to state that it is just a mixture of PG and menthol crystals. Instead of buying one of these 'flavors', do you think I could simply dissolve my own crystals into my PG/nic mixture?
Thanks in advance!
This site is excellent. It does it all.
Joe, I use OpenOffice/LibreOffice. The MS/Excel-centric macros do not work. I manually add them, and then they are available in the recipes.